diff options
Diffstat (limited to 'drivers/soundwire/bus.c')
| -rw-r--r-- | drivers/soundwire/bus.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index a9e0aa72654d..5d5b0bd59ae3 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -492,7 +492,7 @@ int sdw_read_no_pm(struct sdw_slave *slave, u32 addr) } EXPORT_SYMBOL(sdw_read_no_pm); -static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) +int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) { int tmp; @@ -503,6 +503,21 @@ static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) tmp = (tmp & ~mask) | val; return sdw_write_no_pm(slave, addr, tmp); } +EXPORT_SYMBOL(sdw_update_no_pm); + +/* Read-Modify-Write Slave register */ +int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) +{ + int tmp; + + tmp = sdw_read(slave, addr); + if (tmp < 0) + return tmp; + + tmp = (tmp & ~mask) | val; + return sdw_write(slave, addr, tmp); +} +EXPORT_SYMBOL(sdw_update); /** * sdw_nread() - Read "n" contiguous SDW Slave registers |